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How to Make Low Acid Coffee

While coffee is a much-revered daily habit for many people, it does carry its own drawbacks. Coffee can stain your teeth, make you jittery and unfocused, and coffee's high acidity can irritate sensitive stomachs. Fortunately, there is a simple way to brew coffee with much of its acidity removed. This process is called cold brewing, and will allow you to make low acid coffee in both hot and iced forms.


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    Grind your coffee coarsely. Cold brewing is a method that calls for a prolonged steep of the coffee grounds, much like a French press preparation. Because of this, you will get a much more balanced flavor from your coffee if you grind the coffee beans coarsely. The "French press" setting on most coffee grinders will yield adequate results.
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    Stir ground coffee and water together in a glass jar. After grinding the coffee coarsely, add 1/3 cup (80 ml) of the grounds to a clean glass jar. Fill the jar with 1.5 cups (350 ml) of room temperature water. Stir the grounds into the water until they are thoroughly saturated.
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    Cover the jar and let it rest for 12 hours. Place the lid onto the glass jar and allow the ground coffee to steep in the water for about 12 hours at room temperature. This slow extraction process produces a rich, smooth coffee concentrate that has about 70 percent less acid than hot brewed coffee.
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    Strain the mixture through a coffee filter. To remove the grounds from the cold brewed coffee, pour the mixture through a coffee filter placed over a pitcher or coffee pot. Your fresh batch of cold brewed, low acid coffee can be stored in the refrigerator for up to a week.
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    Prepare iced coffee with the coffee concentrate. To make iced coffee with your fresh batch of low acid coffee concentrate, simply mix equal parts cold water and coffee concentrate in a glass. Add ice to the glass, followed by sweeteners and milk if desired.
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    Prepare hot coffee using the cold brewed batch. Of course, you can also make hot coffee using the coffee concentrate. To do this, fill you mug about halfway with the coffee concentrate. Fill the remainder of the mug with boiling water. This will yield a cup of coffee that is regular strength and a comfortable drinking temperature.


  • If you find this recipe yields a hot cup of coffee that is too weak for your taste, increase the proportion of ground coffee used to prepare the cold brewed concentrate.


  • Be aware that cold brewing extracts the coffee's caffeine much more efficiently than hot brewing, with the result that coffee brewed using this method can contain nearly twice as much caffeine as your usual cup. Cutting your coffee grounds with decaf grounds can mitigate this effect.

Things You'll Need

  • Coarsely ground coffee
  • Glass jar
  • Water
  • Coffee filter
  • Pitcher
  • Tea kettle or saucepan
  • Drinking glass or mug

Article Info

Categories: Coffee